87922978 has 16 divisors (see below), whose sum is σ = 154941696. Its totient is φ = 36890640.

The previous prime is 87922973. The next prime is 87922981.

87922978 is nontrivially palindromic in base 10.

It is not an unprimeable number, because it can be changed into a prime (87922973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 153426 + ... + 153997.

It is an arithmetic number, because the mean of its divisors is an integer number (9683856).

Almost surely, 2^87922978 is an apocalyptic number.

87922978 is a deficient number, since it is larger than the sum of its proper divisors (67018718).

87922978 is a wasteful number, since it uses less digits than its factorization.

87922978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307449.

The product of its digits is 1016064, while the sum is 52.

The square root of 87922978 is about 9376.7253345718. The cubic root of 87922978 is about 444.6662109970. Note that the first 3 decimals are identical.

The spelling of 87922978 in words is "eighty-seven million, nine hundred twenty-two thousand, nine hundred seventy-eight".